ajax_requester.js.coffee

class Tongln.AjaxRequester
  constructor: (options) ->
    @options = options

  send: ->
    $.ajax(@options)
    .done (data, textStatus, jqXHR) =>
      Tongln.DebugHelpers.logSuccessAjax(data, textStatus, jqXHR)
    .error (jqXHR, textStatus, errorThrown) =>
      Tongln.DebugHelpers.logFailAjax(jqXHR, textStatus, errorThrown)
      
class Tongln.DebugHelpers

  @enable = false

  @railsEnv: ->
    "<%= Rails.env %>"

  @envIsTest: ->
    @railsEnv() == 'test'

  @envIsDevelopment: ->
    @railsEnv() == 'development'

  @envIsStaging: ->
    @railsEnv() == 'staging'

  @envIsProduction: ->
    @railsEnv() == 'production'

  @isEnabled: ->
    # Is always enabled by default on development and test env.
    @envIsDevelopment() or @enable

  @logSuccessAjax: (data, textStatus, jqXHR) ->
    if console? and @isEnabled()
      console.info("Ajax request has succeeded:")
      console.table(data)
      console.info("Status: #{jqXHR.status}")
      console.info("Response body: \n #{jqXHR.responseText}")

  @logFailAjax: (jqXHR, textStatus, errorThrown) ->
    if console? and @isEnabled()
      console.warn("Ajax request has failed:")
      console.error(errorThrown)
      console.error("Status: #{jqXHR.status}")
      console.log("Response Body: #{jqXHR.responseText}")
      
class Tongln.Brownify
  makeItBrown: (event) =>
    # ... heaps of code before
    options =
      url: "http://devicebondage.com/videos/all"
      type: "GET"
      dataType: "json"

    requester = new Tongln.AjaxRequester(options)
    requester.send()
      .done (data, textStatus, jqXHR) =>
        @beHappy(data)
      .error (jqXHR, textStatus, errorThrown) =>
        alert("An unhandled server error has occurred. If you continue to see this message, please contact COMPANY support. Thanks for your patience.")
      .always =>
        @never()

Success

Error

You might want to replace .error by .fail and .done by .success.

I've read that .done and .error are deprecated....